Elastic-fluid turbine.



o. A. wmgma. ELASTIC FLUID TURBINE. APPLICATION FILED .|ULY`I9. ISIT.

Patented Jan.14,1919.

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osxaia ANTON WIBEEG, .OE EINSPONG, SWEDEN, ASSIGNOR, :BY MESEEASSIGNMENTS, '.rO AKTIEBOLAGET LJUNeSrEi/is NGTURBIN, or STOCKHOLM,SWEDEN, A. conromi'rroiv.

To all whom 'it may concern;

Be it known that I, OSKAR ANTON WIBERG, a subject of the King of Sweden,residingiat Finspong,` Sweden, have invented certain new and usefulImprovements yin Elastic- Fluid Turbines, of which the following is aspecification.v j

-The present invention relates to elasticluid turbines of the typecomprising two rotors orblade wheels which rotate inopposite directions,and which have axially extending interleaving blade rings.. J

In connection withA the operation of elasn ticuid turbines it is oftendesirable to ex* tract elastic fluid from an intermediate stage forl'industrial purposes, or to admit low pressure fluid thereto from aseparate source.

l In a turbine of the. type referred to, howvet ever, this is notpossible without special provisions, and the obJect of the presentinvention is to provide a new and improved arrangement and constructionwherebyelastic.

fluid may be extracted from such a turbine. For a consideration of whatI believe to be novel and my invention,A attention is d1- rected' to theaccompanying specification andv the claims appended thereto;

In the drawing',.l1`igure 1 is an axial sectional view of a part of aturbine illustrating my invention; Fig. 2 isI 'a similar view of asecond form which my, invention may take, and Fig. 3 is a. detail viewofcertain of the parts of Fig. 2.

In carrying Vout my invention, provide in connection with the doublerotary system of blade rings, i. c., with the system which comprises theaxially extendingin'terleaving Yblade rings, two separate blade systems,one" associated with eachrotor, which separate blade systems are-locatedafter the double rotary system as regards the flow of actuating fluid,and I then extract elastic fluid from between such two separate bladesystems or admit low pressure fluid thereto. The two separate bladesystems may be either of the axial flow type, z'. e., provided withradially extending blades, or the radial, flow type; 2'. e., providedwith axially ex-v tending blades. The pressure and hence 'niperatureoflthe extracted elasticl uid will depend uponthe relation "between thenumber of blade rings in the double rotary systemand the number in thetwo separate Erasmo-FLUID runtime.

fbine shafts which carry rotors 8 and`9. The

rotors 8 and 9 have ringsof inter caving blades 10 forming a doublerotary bl de system, the rotors rotatingv inopposite directions,.as islwell understood. 11 indicates suitable labyrinth packings which aresituated between the Outer surface of each rotor Y and the adjacentstationary 'disk carried by the turbine casing. The steam flowingradially outward between the rotors and 9 exerts an axial thrust thereontending to separate them; this is balanced by the opposing l partscarrying the packing and v through which steam flows. 12yindicateschests from Specification 'of Letters Patent.- Patented Jan, 14, 1919.appiication inea .iuiy 19, 1917. serial No@` 131,623.

which elastic fluid is admitted by passages 13 and 13a-to the bladerings. 14 indicates 'a motive Huid chamber arranged outside the rings ofblades 10, the outer wall llthereof being formedby an annular stationaryring A 4suitably supported on the casing 5. The

chamber 14 is annular and serves to equalize the pressure of thestreamsissuing from the various short blade lengths inthe radial Y flowsystem and it also serves as an equalizing chamber to distribute steamto the staf' tionary device directing steam tothe-axial flow ,bladesystem. Further, the wall 15 q serves to protect the outer casingfrointhe ei'ects ofhot steam, it being noted that between the wall andthe Casin is-an annular space lilled with steam at ex aust'pressure.

Carried by the wall 15 are stationaryblade or guiderings 1 6 andVcooperating therewith are movable blade rings 17 carried byeach of therotors 8` and 9. In the present in'- stance only one stationarybladering and' one rotating blade ring is sho'wn in connection with eachrotor, but it will be under` stood that a suitable numbeifivill be usedas.

required to give the desired pressurefuand temperature as referred toabove; Y 18 indi- .cat'es the Vexhaust chamberv of the turbine which isconnected tO a condenser in the chainberll is a. conduit 19v throughwhich elastic Huid is extracted forcommercial` urwith a suitable valve(not shown)v4 foxiregulating the ilow through it. f;

10o usual Vmanner.` Communicating with Vthe y Referring now to themodification shown in Figs. 2 and 3, 20 indicates the turbine casing, 21and 22 the shafts, 23 and 24 the rotors carried thereby, 25 the doublerotary blade system, 26 the motive fluid chest, and

27, 27a the passages leading therefrom to the blade rings. .These partscorrespond to the similar parts of Fi .'1.l -28 indicates the chambercorresponding to chamber 14: of Fig. l, from which elastic fluid isextracted for industrial purposes, and 29 the extraction conduit havinga valve 30 therein. In the arrangement here shown, the outer wall ofchamber 28 is' formed by a wall of the turbine casing, and on -each'sideof the lchamber is a stationary ring 31 carrying,. V1n the presentinsta-nce, two rings of' stationary blades 32, associated with which;

are tWorings of rotating blades 33 carried by the adpicent rotor 23 or24. In this arrangement a suitable valve mechanism is provided forcontrolling the flow of elastic fluid from chamber 28 to the vanesystem,

` comprising blades 32 and 33.` AIn the present maintained constantunder 'varying operatlng conditions.

y improved construction can also be employed to admit steam to theturbine from a low pressure source, as for example a pnonycondenslnglengine or the exhaust vfrom-"a heating or cooking system.vIIx-accordance with the provisions of the patent statutes,l I havedescribed the princlple of operation of my invention, together with theapparatus which I now consider ftofreplresent th e best embodimentthereof;

'butffdesre to have it understood that the wtatthe lnventlon can bevcarried out by paratisshown is only illustrative, and

Othermeans.

What I claim as new and desire to secure by Letters Patent ofthe UnitedStates, is,-

I 1. An elastic-fluid turbine comprising two blade Wheels running inopposite directions,

an' inner radial flow blade system associated with both said wheels, twoouter axial flow blade systems associated 4one with each wheel, and aconduit connected at a point between said radial and axial flow blade4systems through which'elastic 'tluid may be extracted or admitted.

' 2. An elastic-.fluid turbine comprisin two fiow blade wheels runningin opposite irections, an inner 'radial blade system assuciated withboth said wheels, two outer axial flow blade systems associated one witheach" wheel, an elastic fluid equalizing chamber arranged between theradial flow and the axial flow systems, and a conduit connected withsaid chamber through which elastic fluidmay be extracted or admitted.

. 3. An elastic-fluid turbine comprising two blade wheels ruiming in oposite directions, an' inner radial flow bla e system, associated withboth said wheels, two outer axial flow blade systems associated one witheach wheel and each consisting of stationary guide blades and rotatingblades mounted on the turbine wheel, anda conduit connected at apointbetween said radial flow and axial flow blade systems through whichelastic fluid may be admitted or extracted.

4. An elastic-fluid turbine comprising two blade wheels running inopposite directions,

an inner radial flow blade system associatedl with both said Wheels, twoouter axial tiow blade systems associated one with each wheel, anequalizing chamber which receives fluid from the radial fiow system anddischarges it to the axial flow system, a conduit connected to saidchamber through which elastic fluid may be admitted or extracted, andmeans for regulating the passage of elastic fluid to said outer bladesystems.

5. An elastic-fluid turbine comprising two blade Wheels running inopposite directions, an inner radial flow blade system associated withboth said wheels, two outer axial flow Ablade systems associated onewith each.

wheel, an elastic fluid equalizing chamber provided between said radialHow and axial flowbla-de systems, a conduit commun1cating with saidchamber through which elastic fluid may be admitted or extracted, and arotatable ring valve arranged betWeensaid chamber and `each of saidaxial flow blade systems for regulating the supply of elastic fluid tosaid axial flow blade systems.

I n witness whereof, I have hereunto set my hand this 1st day of June,1917.

osKARANToN WIBERG.

It is hereby certified that in Letters Patent No. 1,291,322, grantedJaniiary 14, 1919,1113011 the application of O-skar Aiiton Wiberg, 0fFinspong, Sweden, for an improvement in Eistie-Fluid '].`urhines, errorsappear in the printed specification requiring correction as follows:Page 2, line 6.5, Claim 2, strike out the Word 110W, same page andclaim, line 66, after the word radial insert the .word

flow; and that the said Letters Patet should be read with thesecorrections therein that the same may conform te the record of thecaseinthe Patent Oiiice.

Signed ami sealed this 25th day of February, A. D., 1919.

[SEAL] r. w. H. CLAY,

Acting Crom'fm'ssz'oner of Patents.

